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NWDTW 2026
Venue: BCC - Birmingham (65 Class / 100 theater) clear filter
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Tuesday, July 21
 

1:00pm CDT

Use of Internal and External Compasses with ADCPs
Tuesday July 21, 2026 1:00pm - 1:50pm CDT
The setup and quality assurance of acoustic Doppler current profilers (ADCPs) involve multiple steps preceding streamflow measurement activities. Reliable heading data is essential for Loop Method Moving Bed Tests, GPS-based navigation, and angle calculations in the Azimuth Mid-Section method. This presentation will address the use of both internal and external heading sensors, highlight the significance of accurate heading data, and outline quality assurance procedures applicable during data collection and post-processing.
Speakers
Tuesday July 21, 2026 1:00pm - 1:50pm CDT
BCC - Birmingham (65 Class / 100 theater)

2:00pm CDT

General IV Methods and RIVRs
Tuesday July 21, 2026 2:00pm - 2:20pm CDT
This session will give a general overview of index velocity methods and concepts as well as incorporating the use of RIVRS software, an application to improve the workflow and efficiency of synchronizing water velocity, gage height, and streamflow measurement data.
Tuesday July 21, 2026 2:00pm - 2:20pm CDT
BCC - Birmingham (65 Class / 100 theater)

2:30pm CDT

Break
Tuesday July 21, 2026 2:30pm - 3:00pm CDT

Tuesday July 21, 2026 2:30pm - 3:00pm CDT
BCC - Birmingham (65 Class / 100 theater)

3:00pm CDT

Collecting Data in Moving-Bed Conditions and Understanding Test Results
Tuesday July 21, 2026 3:00pm - 3:50pm CDT
Overview of the cause and effect of a moving bed and methods to identify and correct for a moving bed when measuring discharge with an ADCP from a moving boat. This talk will also include a review of the moving-bed test results and what they mean.
Speakers
avatar for Justin Boldt

Justin Boldt

Hydrologist, USGS
Justin is a Hydrologist for the USGS Ohio-Kentucky-Indiana Water Science Center in Louisville, KY. He began his career with the USGS in 2010 as a student working for the Office of Surface Water out of the Urbana, Illinois office. In 2013, he graduated from the University of Illinois... Read More →
Tuesday July 21, 2026 3:00pm - 3:50pm CDT
BCC - Birmingham (65 Class / 100 theater)

4:00pm CDT

Considerations and ADVM mount designs for flashy index velocity sites
Tuesday July 21, 2026 4:00pm - 4:50pm CDT
A presentation on how to pick the best ADVM mount design for your index velocity site with an emphasis on sites that are flashy in nature. Traditional mount designs tend to favor slower tidal environments that aren't always built to withstand debris hitting them at higher velocities. This talk will go over creative solutions, what not to do, and show off successful ADVM mounts from complex environments. Other considerations for flashy IV sites will also be discussed.
Speakers
avatar for Ashley Ryan

Ashley Ryan

Hydrologic Technician, USGS
Tuesday July 21, 2026 4:00pm - 4:50pm CDT
BCC - Birmingham (65 Class / 100 theater)
 

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